Lycocerus bispermathecus Y. Yang, Wang & Liu sp. nov.

Figs 11D-F, 15B, 17F, 20C, D

Lycocerus centrochinensis ( Švihla, 2004): Li et al. 2015: 300, fig. 1A [misidentification].

Type material.

Holotype: ♂ (MHBU), China, Ningxia, Kongtongshan, 6.VI.1992, leg. J. L. Ding. Paratypes: China: 1♀ (MHBU), Ningxia, Jingyuan, Liupanshan, 13.VI.1995, Collectors Group III of Forestry; 1♀ (MHBU), same data as the preceding, 8.VI.1995, Collectors Group III of Forestry; 1♀ (MHBU), same data as the preceding, 17.VI.1995, Collectors Group III of Forestry.

Diagnosis.

The new species seems similar to L. hubeiensis in the coloration, but differs in the following characters: tarsal claws simple in males, while fore and mid-anterior and posterior claws each with a digitiform tooth at base in the latter; aedeagus: dorsal plates of parameres triangular at apices (Fig. 11E), while truncated in the latter (Fig. 4E); spermatheca with two spiral tubes (Fig. 15B), while only one in the latter.

Description.

Male (Fig. 20C). Head, prothorax, scutellum and legs yellowish orange, mandibles dark brown at apices, antennomeres III-XI black, elytra pale yellow and almost transparent, black at apices, legs darkened at tarsi, meso- and metasterna and abdomen yellowish brown. Body densely covered with yellow recumbent pubescence.

Head feebly narrowed behind eyes, surface densely and finely punctate; eyes moderately large and protruding, head width across eyes nearly wider than anterior margin of pronotum; antennae filiform, extending to apical third length of elytra when reclined, antennomere II shortest, ~ 2 × longer than wide at apices, IV-XI nearly parallel-sided, each with a short smooth impression near apical part of outer margin, IV longest.

Pronotum subquadrate, slightly longer than wide, anterior margin feebly arcuate, lateral margins subparallel, posterior margin nearly straight, anterior angles obtuse-rounded, posterior angles nearly right-angled, disc convex on posterolateral parts, surface finely and feebly sparsely punctate than that on head.

Elytra ~ 4.4 × longer than pronotum, 3.12 × longer than width across humeri, outer margins nearly parallel, disc semi-lustrous, coarsely and densely punctate.

Legs slender, all claws simple.

Aedeagus: basal piece obviously longer than dorsal plate of each paramere (Fig. 11D-F); ventral process of each paramere slender and straight, approaching to each other in ventral view (Fig. 11D) and feebly inclining dorsally in lateral view (Fig. 11F); dorsal plates of parameres feebly shorter than ventral processes (Fig. 11D, F), with inner margins diverging and outer margins converging apically, apical margins widely triangular in dorsal view (Fig. 11E); laterophyse obviously shorter than ventral process, with apices acutely hooked, directing dorso-inwards in ventral view (Fig. 11D); inner sac with a pair of longitudinal sclerites on dorsal side (Fig. 11E).

Female (Fig. 20D). Similar to the males, but eyes less protruding, antennae shorter and extending to elytral mid-length when reclined, middle antennomeres without impressions, pronotum nearly as long as wide, fore and middle legs with a digitiform tooth on each anterior and posterior claw.

Internal organ of reproductive system (Fig. 15B): spermathecal duct stout, spermatheca with two spiral tubes, which are subequal in length, both of them shorter than diverticulum; accessory gland ~ 2.5 × longer than spermatheca.

Abdominal sternite VIII (Fig. 17F): triangular emarginations in middle and on both sides of posterior margin, lateral emarginations feebly deeper than the middle one, the portion between lateral and middle emarginations narrow and acute at apices, obviously extending over apices of latero-apical angles, which are widely triangular.

Body length: 9.0-10.0 mm (9.3 mm in holotype); width: 2.0-2.3 mm (2.0 mm in holotype).

Distribution.

China (Ningxia).

Etymology.

The specific name is derived from the Latin spermatike (sperm-carrying), referring to its distinctive spermatheca, which has two spiral tubes.